Vertical lift pump



W. E. LANG VERTICAL LIFT PUMP Filed July 11, 1947 IN V EN TOR.

Patented May 15, 1951 UNITED STATES PATENT OFFICE 7 VERTICAL LIFT PUMP Wallace E. Lang, Saginaw, Mich.

Application July 11, 1947, Serial No. 760,380

2 Claims.

This invention relates to a vertical lift pump such as used for pumping water out of basements, from low spots, ditches on farms, and in other places where the removal of water is necessary and desired. a One of the prime objects of the invention is to design a pump for lifting water or other liquids from a low to a higher level and with a minimum of power requirement.

'Another object is to design a pump in which the rotating parts can be lubricated, without bringing the lubricant into contact with the liquid being pumped, and which prevents any infiltration of liquid into the lubricating system.

a A further object is to provide a pump in which the impeller is mounted adjacent to an easily removable spider supported bearing.

Another object is to provide a revolvable impeller in combination with a stationary shellsupported bearing, the legs of which are shaped to form a by-pass to permit free flow of. liquid to the outlet of the pump.

Still another object is to provide a drive pulley formed with an interchangeable outer shell or member so that it may be driven by means of a. gear, V-belt, or fiat belt if desired.

Still another object is to design a very simple, practical and efiicient pump, and one that can be easily and economicall manufactured, assembled and/or disassembled.

With the above and other objects in view, the

present invention consists in the combination and,

arrangement of parts, hereinafter more fully described, illustrated in the accompanying drawing, and more particularly pointed out in the appended claims, it being understood that changes may be made in the form, size, proportion, and minor details of construction, without departing from the spirit, or sacrificing any of the advantages of the invention.

In the drawing:

Fig. l is a part-sectional, side-elevational view of the pump.

Fig. 2 is a side-elevations} View of one of the bearing assemblies.

Fig. 3 is an inverted plan view thereof.

Fig. 4 is a side-elevational view of the impeller.

Fig. 5 is an inverted plan view thereof.

Referring now more particularly to the drawing in which I have shown the preferred embodiment of my invention. The numeral 6 indicates the outer shell or housing of the pump; this is tubular in cross section and is preferably formed of sheet metal, an intake opening I being provided in the lower end as shown, and a discharge 2 opening 8 is provided directl adjacent the upper end of the shell and through which the liquid is discharged.

A centrally disposed tube 9 is provided in the shell 6, the lower end being mounted in a bear ing NJ as shown, which bearing is formed with radially extending legs I l which bear against the inner wall of the shell, each leg being vertically curved as at [2 to facilitate the free flow of the liquid being pumped.

The upper end of the tube 9 extends through an opening l3 provided in the plate M which forms a closure for the upper end of the shell, and the tube is shouldered as at 15 to form a stop.

A shoulder 16 is provided on the tube 9 in the position shown, and the upper end is threaded as at IT to threadedly accommodate nuts and washers I8 and I9, and for a purpose to be presently described.

A pump shaft S is mounted in the tube 9, the lower end being tapered as at 20, and an impeller 2| is mounted thereon, said impeller including wings 22, properly pitched to provide a relatively wide surface to efficiently lift the liquid.

A bronze bushing 23 has threaded engagement with the bearing Ill and extends into the impeller 2|, and a liquid seal 24 is provided in the upper end of the impeller assembly.

The shaft S is turned as at 25, the lower end being tapered as at 26, and a nut 21 is threaded on the threaded section 28 of the shaft with a cap 29 fitted over the nut, said nut serving to secure the parts in assembled relation.

The upper end of the shaft S is also tapered as at 3|, the end section being shouldered and threaded as at 32, and a nut 33 is threaded thereon, this shaft being readily reversible end for end if desired.

A drive pulley 34 is mounted on the tapered end section 3| and comprises top and bottom plates 35 and 36 respectively, inner and outer tubular members 31 and 38 are interposed between the end plates 35 and 36, and vertically disposed bolts 39 serve to secure the members in assembled relation, roller bearing assemblies 40 and 4| being interposed between the members 9 and 31, and a lubricant seal 42 is provided at the lower end to retain lubricant therein.

Brackets 43 are welded to the outer face of the shell to facilitate the mounting of the pump and holding it in position. A cylindrical reinforcing ring 44 is inserted into the lower end of the outer shell and can be welded or secured in position in any desired manner; it reinforces this opening and provides for close clearance with the impeller blades.

A lubricant line 45 leads into the interior of the tube 9 so that the shaft S may be lubricated as desired, and an oil line 46 leads to the hearing assembly 40.

It will be noted that the edges of the blades 22 are chamfered to allow smooth, frictionless entrance into the liquid to be pumped without producing a turbulent reaction.

As the impeller is revolved, the fluid is pulled into the pump proper (see arrows), and the stream of liquid is forced upwardly between the legs of the bearing 10, the liquid discharging through the opening 8 as indicated by the arrows. The thin sections of the legs of the spider as indicated more clearly in Figs. 3 and 4, show of, a closure for the upper end of the casing, a

centrally disposed tube mounted in said casing and projecting beyond the upper end thereof, a drive pulley journaled thereon, a shaft mounted in said tube and drivingly connected to said pulley, an impeller mounted on the lower end of the shaft within the cylindrical reinforcing ring of said casing, a bearing in said casing directly above said impeller and formed with radially disposed vertically curved legs welded to the side wall of the casing, and a bushing having threaded engagement with said bearing and in which the lower end of the shaft is journaled.

2. A high lift pump of the character described comprising a cylindrical housing open at its lower end to form an intake opening, a discharge opening in the side wall of the casing adjacent the upper end thereof, a centrally disposed bearing in said housing adjacent the lower end thereof, a vertically disposed shouldered sleeve mounted in said bearing and projecting beyond the upper end of the housing, a drive pulley journaled on the upper end of the sleeve, a drive shaft in said sleeve and to which the drive pulley is connected, a bushing threaded into the lower end of said bearing and in which the lower end of the drive shaft is journaled, tapered sections on the upper and lower ends of the shaft and terminating in threaded sections, securing means on said threaded sections, an impeller mounted on the lower end section of the shaft, and a cylindrical sheet metal reinforcing insert insertable into the lower end of the housing to reinforce and form a close fit with the impeller blade.

WALLACE E. LANG.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,893,614 Couch Jan. 10, 1933 2,028,360 Sprink Jan. 21, 1936 2,211,526 Storey Aug. 13, 1940 2,260,169 Couch Oct. 21, 1941 2,288,902 Hartman July 7, 1942 2,366,732 Kalix Jan. 9, 1945 

